Amazon
Very powerful metal Bluetooth speaker (3.7V/400mAh) with lithium polymer battery. Frequency response 80 Hz - 20 kHz, SNR Battery: 7 hours battery life, rechargeable in just 2 hours
Very powerful metal Bluetooth speaker (3.7V/400mAh) with lithium polymer battery. Frequency response 80 Hz - 20 kHz, SNR Battery: 7 hours battery life, rechargeable in just 2 hours